Summary translation

The aim of this project is to establish a basic understanding of the mechanisms of interactions between co-existing moth pests and their natural enemies in organic grown apples. The moths included are the apple fruit moth (Argyresthia conjugella Zell.), and the codling moth (Cydia pomonella L). The obtained knowledge will be used in the development of a strategy for enhanced biological control of these moth pests. Enhanced biological control could be initiated by inter-plantation of perennial herbs and/or different tree species, both providing alternative food sources for the natural enemies such as pollen, nectar and alternative insect herbivores that are not considered as pests in the actual cropping system. Enhanced natural control of pest insects would enhance the quality of organically grown apples and may also contribute to a reduction in the use of insecticides in conventional apple orchards in Sweden.